It has been elapsed 30 years after first percutaneoas transluminal coronary angioplast (PTCA) was done by Grundizing, during which large improvements was achieved in the procedure so that the majority of patients return to their life after PTCA and or stenting. PTCA is associated with success rate of 90% and major complications of less than 5%. The major complication of PTCA is abrupt closure of dilated vessel, symptoms include 1) anginal chest pain 2) EKG changes 3) hypotension 4) arrhythmias 5) cardiac arrest. This paper reports a rare case of left anterior descending (LAD) dissection extending to left main stem (LMS) which was dramatically responded to coronary stenting (LAD,LCX,LMS).